WTB KOM Tough i40 TCS RimIf you're gearing up to face the high intensity of enduro riding, you'll want the rolling advantages of this extra-wide 40mm KOM rim to keep you in complete control throughout. With a durable alloy construction for reliable impact absorption, this tubeless ready rim also lets you run super-wide tyres for increased traction and grip. Plus, the I-Beam construction increases the overall stiffness of this rim, giving you a handling advantage for taking all those technical corners on the downhill.Features:  Usage: Trail / Enduro / Gravity  Rim: Alloy, Tubeless  Width: 40mm (inner)  Spoke Holes: 32  Weight: 630g (27.5"), 671g (29")Technologies:UST Tubeless Ready: The UST concept improves traction, control and comfort while reducing inertia and flats.  TCS 2.0 Technology: This refined version of the “Tubeless Compatible System” offers the same high performance, lightweight mountain bike rim structure, but is now easier to install and more dependable.Buy WTB Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.